Coupling.



D. A. 000K.

A COUPLING. APPLICATION FILED JAN. 9, 1914 Patented Jan. 19, 1915.

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Specification of Letters Patent.

Patented J an. 19,

Arptication filed January 9, 1914:. Serial No. 811,273.

"a citizen of the United States of'America,

' residing at Detroit, in the county of Wayne and .State of Michigan,- have invented certain new and useful Improvements-in Gouplings, of which the followingis Ea specification, reference being bad; therein to the accompanying drawings I To obviate the necessity of. using screw threads for connecting an air supply pipe to the inlet tube of a pneumatic tireor other structure, 51 have devised a coupling, wherein positive and reliable means are employed, as hereinafter set forth,f'for expeditiously looking a coupling upon the .air inlet tube of a tire, whereby the coupling can not become accidentally (displaced as air .is forced into the tube and-the tire thereof.

I attain the above and other objects by a simple, durable and inexpensive mechanical construction embodying an eccentric lock, which together with is appurtenant parts will be hereinafter specifically .described and then claimed, and reference will now be had to the drawing, wherein-l- Figure 1 is a perspective view of the coupling as applied-the air inlet tube or plpe of a pneumatic tire; Fig. 2 i's-' a"-longitudinal sectional view. of the coupling; Fig. 3 is an end view of the same showing the eccentrie, ,loelr in an unlocked position; Fig. 4 is a similar viewshowing the eccentric lock in a locked position; Fig. 5 is a perspective view ofa detached washer; Fig. 6 is a similar view of a detached eccentric member, and Fig. 7 is a perspective view of the lock body. g

A coupling in accordance with this invention comprises a hollow dome-shaped coupling member 1 having a tubular nipple 2 I in communication therewith and connected to said nipple in the ordinary and well known manner is the end of an air supply pipe 3. The pipe :3 is of the conventional form that generally extends from a pump or other source of air supply for admitting air to the member 1 and an air inlet tube 4 over which the member 1 is placed. The

outer walls thereof lmurled or roughened and the inner walls screw threaded, as at 6 whereby-the lock body can be screwed upon the exterior-1y screw threaded flange 7 of-tlie member 1. The lock body '25 has the bottom 8 thereof provided witha concentric opening 9 and arranged in the cup shaped body 5;. Upon the bottom8 thereof. is a washer 10 and a resilient gasket 11.- :The gasket-d1 engages the end ofthe flange 7 and said gasket has an annular rib-12' engagingthe inner wall of said flange. The asket 1d also-has :a central nipple 13 a apted -to snugly fit'over the reduced end of the tube- 4- and establish a non-lockable connection lbetweenthe member 1 and said tube.

. The bottom-8 of thelock bedy dime a dedisposed relatively .to the opening 9 of. the lock body. The-jcagel l is made of-malleaible metal and theinnerwallthereof is chamfered-or cut away to provide .an annular seat .15. The wall of the cage 14: is alsocut awaywhere said cage meets the'periphenal 1-edge of the body into provide an ropemnig .16 forqthe purpose that will ,hereinaifterappear.

Loosely mounted upon the. bottom a-er the lock body 5, within the cage 14, is a flat locking member 17 in the form of a disk, said member having an eccentric opening 18 adapted'in one position of the member to register with the opening 9 in the bottom ,of the look body. The member 17 has a radially disposed handle or extension 19 that extends through the opening 16 of the cage and permits of the-loo ing member being shifted in the cage.

Arranged upon the seat 15 of the cage is a washer 20 provided with aneccentric opening 21 normally in alinement with the opening 9 in the bottom of the look body. The washer 20 retains the locking member 17 in the cage and said washer is retained upon the seat 15 by bending the edges of-the cage 14 into engagement therewith, as best shown in Fig. 2 of the drawing. With the cage 14 made of malleable metal the edges thereof can be easily up-set or flanged to prevent the washer 20 and the locking member 17 from becoming accidentally displaced.

The walls of the opening 18 of the locking member 17 are screw threaded, as shown in Fig. 9. or otherwise formed whereby a wall of the opening 18 can be shifted into env pending annular cage 14 that eccentrically gagement with the wall of the air inlet tube 4: to secure the lock body 5 against accidental displacement by internal air pressure as the tube 4 is being supplied with air.

With the handle or extension 19 engaging one end of the cage the locking member 17 isin. an unlocked position and with the handie or extension 19 engaging the other end of the ca e the locking member is in a locked position. This is best shown in Figs. 3 and 4 of the drawing.

From the foregoing it will be observed that the coupling can be easily and quickly fitted over the end of the air inlet tube 4 and then thelceking member 17 actuated to secure the coupling against accidental displacement relatively to the tube 4. The eccentric locking member 17 affonds. ready means for connecting the cou ling without injuring the screw threads 0 the air inlet tube 4 and without the necessity of using a wrench or tools.

'One embodiment of my invention has been illustrated, but it is to be understood that the structural elements are susceptible to such variations and modifications as fall within the scope of the appended claims.

What I claim is 1. In a coupling, the combination with an exteriorly screw threaded air inlet tube, and a coupling member adapted to supply air thereto, ot a lock body detachably connected to said member and provided with an opening to receive the end of said tube, a gasket within said lock body for snugly engaging said tube, a cage carried by said lock body ianne? and having the wall thereof cut away to provide stops, a washer arranged in said cage, an eccentric locking member rotatably supported within said cage between said lock body and said washer and adapted to engage the threads of said tube and lock said body relative thereto, and a handlebarried by said member to facilitate shifting said member,said handle being limited in its movement by the stops of said cage.

2. In a coupling, the combination with an exteriorly screw threaded air inlet tube, and a coupling member adapted to supply air thereto, of a lock body detachably connected to said member and provided with an opening to receive the end of said tube, an eccentric depending cage carried by said lock body and having the wall thereof cut away to provide stops, a washer arranged in said cage, an in-turned flange carried by said cage and supporting said washer therein, an eccentric locking member rotatably supported within said cage between said lock body and said washer and adapted to engage the threads of said tube and lock said body relative thereto, and a handle carried by said 'member to facilitate shifting said member within said cage, said handlebeing limited in its movement by-contacting with the stops of said cage.

In testimony whereof ll afix my signature in presenceof two witnesses. I

DAVID ALLAN (300K. Witnesses:

ANNA M. Donn, G. E. MCGRANN. 

